Entropion[1]

Vietnamese Potbellied pigs are prone to entropion due to the conformation of their heads.[2] Entropion can be congenital, secondary to dehydration (especially in newborns), secondary to squinting from eye pain or scarring, or secondary to microphthalmos. If entropion is left untreated, as in other species, it will lead to other ocular issues such as severe keratoconjunctivitis, corneal ulceration and scarring, and even corneal perforation.

Mild cases of entropion in piglets less than a day old may respond to frequent (hourly or more) manual eversion of the eyelid margins in combination with a heavy topical lubricant. Dehydration of the neonate, if present, should be corrected as well. If the entropion is not corrected within 48 hours or the animal is older, a more permanent eversion method will be needed.

Tacking the affected eyelid open is an option. This is performed by placing 1-2 modified horizontal mattress sutures with 3-0 or 4-0 suture. While this can be done in awake goats; pigs tend to be more resistant to such things. So injectable sedation is recommended to help relax the pig. As with other sedative events, oxygen supplementation is recommended. The procedure itself is performed routinely as you would in other species. The most important part is that your bites are only partial thickness, and no suture is touching the cornea. Suture ends should be trimmed short to reduce the chance of damaging the cornea.

There are more involved surgical options that may require skin removal, but these are not recommended as a primary method as the tacking method is quick, easy, very successful, and carries less risk to the eye than other methods.